Dowel-pin.



H. HANSTEIN.

DOWBL PIN.

APPLICATION FILED MAY 12. 191s.

Patented Dec. 23, 1913.

By @fu/6%@ from/frs n. n fili KJ Application led 12, w13.

To aZZ whom i may concern:

Be it known that i, Henny HANSTEIN, residing at ioughlreepsie, in the county of utchess and State of New York, have invented a nen7 and improved `Bowel-Pin, of which the foilovving is a speeication.

My invention is in the nature oi: an iinproved dowei pin `capable of being used for any of the purposes for which an ordinary dowel pin is adapted, but more especially designed for use on wood or metal patterns core boxes, iiaslrs and other articles requiring` sections and which need be frequently put together and taken apart.

Primarily my Vinvention has i'or its object to provide a siinple device of the character stated7 which can be manufactured at a small cost, is practically indestructible and is eiiiective for its intended purposes.

Another object or my invention is the pro viding ci a dowel pin, w rich in its practical appiication wili take the piace of two ordinary doweis, since shifting of the two parts doweied together is rendered impossible by reason of the construction of my dewel.

Another object of my invention is to provide a dor-fel whose parts are cooperatively so arranged and combined that it is impossible to maize a mistake in assembling two sections of the pattern, and by the use of which many annoyances and mistakes in assembling pattern sections is avoided.

A further object of my invention is to provide an improved construction oi.l dowei pin having a bea-ring and guiding surface much larger than appears in the ordinary forms of dowel pin and of such shape that renders the dowel pin much more durable and safer to use.

1With other objects in view that will hereinafter appear7 my invention is an improved dowel pin that embodies the pecuiiar construction and novel arrangement of parts hereinafter described in detail, pointed out in the ciaiins and illustrruterl in the accompanying` drawings7 in which:

Figure l is a perspective view or' the two parts that constitute my improvedLl dowel pin. Fig. 2 is vertical section showing my dowel applied to two sections of a pattern or other separable body. Fig. 3 is a perspective view, parts being in section, or a portion of two sections of a iiasir or pattern joined by my dewel pin. Fig. i is an inu' verted plan view oif the upper dowel or lift- Specieation oi Letters Patent.

Serial No. 787,073.

in@l member. Fig. 5 is a pian view of the lower dowel or topping n'ieinber. Figs. 6 and 7 are cross sections of the said me My improved dowel which can be made ci any desired size. and thickness may he cast of any suitable metal or stamped out of sheet niet-ai.

in carrying out my invention the lower member l is in the nature of a fiat disk having a pluraiity of countersunh apertures l() for the reception oit the fastening screws ll that secure it to its resihiiective section l2, the latter having a suitahie here or recess to receive the said member l. rEhe member l has a centraliy disposed arbitrarily shaped opening i3, the shape or which is of such character that the pin i?, which is of a like shape can be entered into the aid opening only under one particular adj i t 9. designates the pin member which includes aeircular iiange il oif adiainetercqual L L that oi the dish l, and the said fiange is also provided with eountersnnl: openings 22 for he screws that secure the pin portion toA its respective pattern section Oei, the latter having1 a shallow bore Q5 for the iange 2l. rihe pattern section i2 has a deep bore or socket for receiving the pin 2 as is clearly shown in Fig Q.

rihe parti :ular shape of the pin and the opening` receive it may be oi any arbitrary shape so iong as the conligurations thereof are such that the pin can match the opening under one particular adjustment. prefer to lnalre the n ane the opening of triangular Shape .vi i the angle edges rounded.y two 27 being oiE like shape of such edges 2?-- and the third 26 ot a diiferent shape. prei'- erahly larger, shown, the pin being of corresponding shape, as shown.

By reason oit' i'oiuningl two members as shown and described, it is obvious that it is in'ipossibie to make a mistake in asseinbiingl the two sections of the pattern together as the dowel pin iv'il iit one way only on ac count of the corresponding shapes oit the dowei pin and the opening` it engages. Furthermore, by reason of forming; the dowel and pin parts as stated, a. large bearing and guiding?,` surface is provided.

In the most complete forni of inv dowei and pin the pin portion is made suiiciently thick at the penetrating end to provide for an internally threaded aperture Q9 for receiving a lifter and since my dowel pin can nib-ers.

sav

loe readily placed in the center of any parted pattern, it is of great advantage to use the same as a rapping and lifting plate.

From the foregoing taken in connection With the drawing, the manner in which my invent-ion is used and its advantages will be readily apparent to those skilled in the art to Which it appertains.

That l claim is:

A device of the character described, comprising a plate adapted to be secured to a section of a pattern or other like body, said plate having a triangular opening, the corners of said opening being rounded and one of said corners being` rounded on an arc of greater curvature than that of the other corners, another plate adapted to be secured to an opposing section of the pattern or other object, and having a projecting portion shaped to fit the opening in said first nientioned plate, substantially as shovvn and for the purposes described.

HENRY HANSTEN. Viitnesses CEAS. E. SWANSTROM, FRED WEBER.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Eatents, Washington, D. C. 

